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This enshrines the current testsuite practice of using ffi_arg for

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returned values.  It would be reasonable and logical to use the actual
return argument type as passed to ffi_prep_cif, but this would mean
changing a large number of tests that use ffi_arg and all backends
that write results to an ffi_arg.
This commit is contained in:
Alan Modra
2013-11-13 16:55:36 -05:00
committed by Anthony Green
parent 8af42f9944
commit 58c2577a3f
5 changed files with 28 additions and 21 deletions
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doc/libffi.texi
+5 -4
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@@ -214,7 +214,7 @@ int main()
ffi_type *args[1];
void *values[1];
char *s;
int rc;
ffi_arg rc;
/* Initialize the argument info vectors */
args[0] = &ffi_type_pointer;
@@ -222,7 +222,7 @@ int main()
/* Initialize the cif */
if (ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 1,
&ffi_type_uint, args) == FFI_OK)
&ffi_type_sint, args) == FFI_OK)
@{
s = "Hello World!";
ffi_call(&cif, puts, &rc, values);
@@ -414,6 +414,7 @@ Here is the corresponding code to describe this struct to
int i;
tm_type.size = tm_type.alignment = 0;
tm_type.type = FFI_TYPE_STRUCT;
tm_type.elements = &tm_type_elements;
for (i = 0; i < 9; i++)
@@ -540,7 +541,7 @@ A trivial example that creates a new @code{puts} by binding
#include <ffi.h>
/* Acts like puts with the file given at time of enclosure. */
void puts_binding(ffi_cif *cif, unsigned int *ret, void* args[],
void puts_binding(ffi_cif *cif, ffi_arg *ret, void* args[],
FILE *stream)
@{
*ret = fputs(*(char **)args[0], stream);
@@ -565,7 +566,7 @@ int main()
/* Initialize the cif */
if (ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 1,
&ffi_type_uint, args) == FFI_OK)
&ffi_type_sint, args) == FFI_OK)
@{
/* Initialize the closure, setting stream to stdout */
if (ffi_prep_closure_loc(closure, &cif, puts_binding,